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Visual back pressure spray test device used for optical measurement and method thereof

A technology of spray test and optical measurement, which is applied in the direction of measuring device, optical instrument test, machine/structural component test, etc. It can solve problems such as deviation and inability to simulate the back pressure combustion process, so as to achieve true measurement results and avoid secondary The effect of returning fog

Inactive Publication Date: 2017-04-19
BEIJING AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing measurement methods of atomization mixing characteristics are mostly carried out by using optical measurement technology in an open environment at normal pressure. big deviation

Method used

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  • Visual back pressure spray test device used for optical measurement and method thereof
  • Visual back pressure spray test device used for optical measurement and method thereof
  • Visual back pressure spray test device used for optical measurement and method thereof

Examples

Experimental program
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Effect test

Embodiment

[0060] The tested product is: a certain type of direct current impact nozzle, the rated flow rate is 2g / s, and the back pressure requirement is 0.5±0.05MPa. At the same time, the laser Doppler velocimeter is used to measure and characterize the flow field.

[0061] Such as figure 1 and figure 2 As shown, a visual back pressure spray test device for optical measurement, the test device includes liquid outlet pipeline 1, 3 sets of mirror structure 2, spray cabin 3, cylinder 4, gas pressure inlet Pipeline 5, overpressure safety release outlet pipeline 6, upper cover 7, manual mechanical lifting structure 8, 2 sets of small flow liquid inlet pipelines 9, 2 sets of large flow liquid inlet pipelines 10, air release control Outlet pipeline 11, purge pressurized inlet pipeline 12, six-dimensional electric actuator 13, 3 sets of fan-shaped purge devices 14 and 3 sets of supports 15.

[0062] The spray cabin 3 is a cabin structure with an elliptical head, and the bottom is provided w...

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Abstract

The invention relates to a visual back pressure spray test device used for optical measurement and a method thereof and especially relates to a back pressure environment spray test device which carries out atomized mixing characteristic research and is used for an optical measurement technology. The device is generally located on a downstream of a liquid flow test supply system. A spray test condition possessing stable environment pressure can be formed so as to simulate back pressure states in various kinds of combustion chambers. A visual function and an optical coordinate system are possessed, which is convenient for using various kinds of laser measurement devices to carry out non-contact measurement. The device is installed on a fan blowing device above a sight mirror so as to continuously output a fan air blade downwardly so that water mist is brought to an outfall. Under the condition that an optical path is not influenced, the sight mirror is protected from being immersed by the water mist and normal propagation of the optical path is ensured.

Description

technical field [0001] The present invention relates to a visual back-pressure spray test device and method for optical measurement, in particular to a back-pressure environment spray test device for research on atomization mixing characteristics using optical measurement technology. The equipment is generally located in the liquid flow test Downstream of the supply system, a spray test condition with stable ambient pressure can be formed to simulate the back pressure state in various combustion chambers, and it has a visualization function and an optical coordinate system, which is convenient for non-contact measurement with various laser measuring equipment. Background technique [0002] Injectors and combustion nozzles are the core components of rocket engines and internal combustion engines. Their spray characteristics have a direct impact on combustion efficiency and combustion stability. Through the measurement and analysis of spray data during the cold test, the spray ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00
CPCG01M11/00
Inventor 宋戈冯晓鸣周琰尹健昭谷雨刘国龙
Owner BEIJING AEROSPACE PROPULSION INST
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